System Description

IDENTIFICATION OF SYSTEM
The vehicle systems that are part of the "body" system are:
- Airbag
- Audio
- Automatic Temperature Control
- Cabin Heater
- Chime
- Communication
- Door Ajar System
- Electrically heated system
- Exterior lighting
- Instrument Cluster
- Interior Lighting
- Manual Temperature Control
- Memory Seat
- Overhead Console
- Power Door Lock/RKE
- Power Folding Mirrors
- Power Sliding Doors
- Power Liftgate
- Power windows
- Tire Pressure Monitor System (TPMS)
- Vehicle Theft Security System (VTSS)
- Windshield Wiper and Washer.

SYSTEM DESCRIPTION AND FUNCTIONAL OPERATION
The body system on the 2004 RS and RG consists of a combination of modules that communicate over the PCI bus (Programmable Communication Interface multiplex system). Through the PCI bus, information about the operation of vehicle components and circuits is relayed quickly to the appropriate modules. All modules receive all the information transmitted on the bus even though a module may not require all information to perform its function. It will only respond to messages "addressed" to it through binary coding process. This method of data transmission significantly reduces the complexity of the wiring in the vehicle and the size of wiring harnesses. All of the information about the functioning of all the systems is organized, controlled, and communicated by the PCI bus,which is described in the Communication Section of this general information.